Looks like Sciaridae
Check picks of them with what you have there, pics are really not good.
en.wikipedia.org
Im 80% sure.
These can grow to great populations fastly. Smaller ones are not a problem for growth, but yougoing to have "meat" in your cannabis..... say, it's not going to be vegan anymore to smoke it
. In the end this flys lay everywhere in the trics, because they are so stupid to land there, and then they die, at least the ydie totally stoned. One small step for a sciaridae, but endless steps to tweeze them dead bodies outta the bud again. When they get lots.... its sysiphus to tweeze them out...
Use yellow-lime-plates to catch them off before they lay eggs, that reduces their pop growing so fast. I use them everytime to just not give the first single one a chance... then it dont comes that far.... these are really stupid. They step on anything.... trichomes, lime-plates.... not the most intelligent beeing, just a pro at fucking around making children...
The larvae can eat roots but thats also problematic first when they explode in population.... so stop them early stage!
Usually these have it easy when your pots have holes, like airpots.... better are ceramique pots to give them less territory
One way to stop them is putting a layer of sand on top of the soil so they cannot lay eggs in the soil.
Neem does work to... but is notneccesary at early stage to stop them reproducing.
They come from the soil, they breed in the soil. The yellow-lime plates are excellent, they always land their looking for partner... when it catched some it seems to speed up, more and more land
idiots, they think that lim is where the party is going on, but its a slow and boring starve to death trap... pretty evil.... you can blow slight air against them at the lime and see these flies live on there for some days slowly dehydrating! Damn its an evil trap
God forgive, but they must leave, and if they're not willing, so i use force.